Red / orange / blue 3 color WHO tips High accuracy Lithium battery power supply Intelligent pressure LCD digital display legible An irregular heartbeat tips WHO warning message function The over pressure protection function No operation in 1 minutes automatic shutdown Double mode, each of the 99 set of measurements of memory Using the oscillometric blood pressure measurement, accurately measure the blood pressure Item Type: Blood Pressure For (Blood pressure): Arm Power (W): 5W Voltage (V): DC 5V Display screen : LCD Materials: ABS 0.550 Package weight: 0.602 kg Wrist size(L*W):39*15cm Product Size ( L x W x H ): 14.00 x 10.00 x 6.50 cm / 5.51 x 3.94 x 2.56 inches Package Size ( L x W x H ): 17.50 x 13.50 x 9.50 cm / 6.89 x 5.31 x 3.74 inches Package Content: 1 x Arm Electronic Blood Pressure Monitor, 1 x Arm Band, 1 x Power Cable, 1 x English Manual